IPAC2012 - List of Keywords (ECR)

Paper	Title	Other Keywords	Page
WEPPC097	Development of Nb and Alternative Material Thin Films Tailored for SRF Applications	SRF, ion, vacuum, plasma	2444
	A-M. Valente-Feliciano, H.L. Phillips, C.E. Reece, J.K. Spradlin, X. Zhao JLAB, Newport News, Virginia, USA B. Xiao The College of William and Mary, Williamsburg, USA
	Funding: *Authored by Jefferson Science Associates LLC under U.S. DOE Contract No. DE-AC05-06OR23177. Avenues for the production of thin films tailored for Superconducting RF (SRF) applications are showing promise with recent developments in vacuum deposition techniques using energetic ions. JLab is using energetic condensation via Electron Cyclotron Resonance and High Power Impulse Magnetron Sputtering (HiPIMS) for the development of Nb films and multilayer SIS (superconductor-insulator-superconductor) structures to reach bulk Nb performance and beyond. Nb films with RRR comparable to bulk values are readily produced. The influence of the deposition energy on the material and RF properties of the Nb thin film is investigated with the characterization of their surface, structure, superconducting properties and RF response. Nucleation studies are investigating the best conditions to create a favorable template for growing the final SRF surface. This paper presents results on surface impedance measurements correlated with surface and material characterization for Nb and multilayered SIS films produced on a variety of substrates.

THPPC013	Progress on Coupled RFQ-SFRFQ Accelerator for Materials Irradiation Research	rfq, cavity, ion-source, ion	3302
	Z. Wang, J.E. Chen, S.L. Gao, Z.Y. Guo, Y.R. Lu, S.X. Peng, W.L. Xia, X.Q. Yan, J. Zhao, K. Zhu PKU/IHIP, Beijing, People's Republic of China
	Funding: Project supported by the National Natural Science Foundation of China (Grant No.10905003) and China Postdoctoral Science Foundation. There is always high interest to study material irradiation damage effects based on accelerators. The bombardment of solids with high energy particles causes some changes in many important engineering properties. By implanting helium ions, it may be possible to simulate the damage process occurs in vessels and unravel the complexμstructural andμchemical evolutions that are expected in advanced nuclear energy systems. A materials irradiation facility based on coupled RFQ-SFRFQ accelerator will be built in Peking University, attribute to the commissioning of prototype SFRFQ accelerator, we have coupled the SFRFQ electrodes and the traditional RFQ electrodes in one cavity to form a more compact accelerator which can provide helium beam with energy of 0.8MeV for materials irradiation research.

THPPP040	Heavy-ion Beam Acceleration at RIKEN for the Super-Heavy Element Search	ion, target, ion-source, cyclotron	3823
	M. Kase, M. Fujimaki, Y. Higurashi, E. Ikezawa, O. Kamigaito, M. Komiyama, T. Nakagawa, K. Ozeki, N. Sakamoto, K. Suda RIKEN Nishina Center, Wako, Japan T. Aihara, T.O. Ohki, K. Oyamada, M. Tamura, A. Uchiyama, H. Yamauchi SHI Accelerator Service Ltd., Tokyo, Japan
	In RIKEN Nishina accelerator center, the experiment on the super-heavy element (Z=113) search has been being carried out since 2003. The RIKEN heavy-ion linac is supplying a heavy-ion beam of 70Zn with energies around 5MeV/nucleon. The beam intensities are required more than 1 particle maicro amper on the target. Very long-term and stable operations are intrinsic for this kind of experiments. So far two events for Z=113 have been found during a net irradiation time of 10345 hours (431 days) with a total dose 1.1 x 10²⁰ (12.8 mg). Heavy operation of the linac will be reported.

Paper

Title

Other Keywords

Page

WEPPC097

Development of Nb and Alternative Material Thin Films Tailored for SRF Applications

SRF, ion, vacuum, plasma

2444

A-M. Valente-Feliciano, H.L. Phillips, C.E. Reece, J.K. Spradlin, X. Zhao
JLAB, Newport News, Virginia, USA
B. Xiao
The College of William and Mary, Williamsburg, USA

Funding: *Authored by Jefferson Science Associates LLC under U.S. DOE Contract No. DE-AC05-06OR23177.
Avenues for the production of thin films tailored for Superconducting RF (SRF) applications are showing promise with recent developments in vacuum deposition techniques using energetic ions. JLab is using energetic condensation via Electron Cyclotron Resonance and High Power Impulse Magnetron Sputtering (HiPIMS) for the development of Nb films and multilayer SIS (superconductor-insulator-superconductor) structures to reach bulk Nb performance and beyond. Nb films with RRR comparable to bulk values are readily produced. The influence of the deposition energy on the material and RF properties of the Nb thin film is investigated with the characterization of their surface, structure, superconducting properties and RF response. Nucleation studies are investigating the best conditions to create a favorable template for growing the final SRF surface. This paper presents results on surface impedance measurements correlated with surface and material characterization for Nb and multilayered SIS films produced on a variety of substrates.

THPPC013

Progress on Coupled RFQ-SFRFQ Accelerator for Materials Irradiation Research

rfq, cavity, ion-source, ion

3302

Z. Wang, J.E. Chen, S.L. Gao, Z.Y. Guo, Y.R. Lu, S.X. Peng, W.L. Xia, X.Q. Yan, J. Zhao, K. Zhu
PKU/IHIP, Beijing, People's Republic of China

Funding: Project supported by the National Natural Science Foundation of China (Grant No.10905003) and China Postdoctoral Science Foundation.
There is always high interest to study material irradiation damage effects based on accelerators. The bombardment of solids with high energy particles causes some changes in many important engineering properties. By implanting helium ions, it may be possible to simulate the damage process occurs in vessels and unravel the complexμstructural andμchemical evolutions that are expected in advanced nuclear energy systems. A materials irradiation facility based on coupled RFQ-SFRFQ accelerator will be built in Peking University, attribute to the commissioning of prototype SFRFQ accelerator, we have coupled the SFRFQ electrodes and the traditional RFQ electrodes in one cavity to form a more compact accelerator which can provide helium beam with energy of 0.8MeV for materials irradiation research.

THPPP040

Heavy-ion Beam Acceleration at RIKEN for the Super-Heavy Element Search

ion, target, ion-source, cyclotron

3823

M. Kase, M. Fujimaki, Y. Higurashi, E. Ikezawa, O. Kamigaito, M. Komiyama, T. Nakagawa, K. Ozeki, N. Sakamoto, K. Suda
RIKEN Nishina Center, Wako, Japan
T. Aihara, T.O. Ohki, K. Oyamada, M. Tamura, A. Uchiyama, H. Yamauchi
SHI Accelerator Service Ltd., Tokyo, Japan

In RIKEN Nishina accelerator center, the experiment on the super-heavy element (Z=113) search has been being carried out since 2003. The RIKEN heavy-ion linac is supplying a heavy-ion beam of 70Zn with energies around 5MeV/nucleon. The beam intensities are required more than 1 particle maicro amper on the target. Very long-term and stable operations are intrinsic for this kind of experiments. So far two events for Z=113 have been found during a net irradiation time of 10345 hours (431 days) with a total dose 1.1 x 10²⁰ (12.8 mg). Heavy operation of the linac will be reported.